Search Results for author: Veronika Rockova

Found 11 papers, 4 papers with code

On Semi-parametric Inference for BART

no code implementations ICML 2020 Veronika Rockova

There has been a growing realization of the potential of Bayesian machine learning as a platform that can provide both flexible modeling, accurate predictions as well as coherent uncertainty statements.

BIG-bench Machine Learning regression +2

Tree Bandits for Generative Bayes

no code implementations16 Apr 2024 Sean O'Hagan, Jungeum Kim, Veronika Rockova

Finally, we successfully apply our approach to the problem of masked image classification using deep generative models.

Image Classification

Deep Bayes Factors

no code implementations8 Dec 2023 Jungeum Kim, Veronika Rockova

After training, our deep learning approach enables rapid evaluations of the Bayes factor estimator at any fictional data arriving from either hypothesized model, not just the observed data $Y_0$.

Model Selection

Sparse Bayesian Multidimensional Item Response Theory

1 code implementation26 Oct 2023 Jiguang Li, Robert Gibbons, Veronika Rockova

In our simulation study, we show that our method reliably recovers both the factor dimensionality as well as the latent structure on high-dimensional synthetic data even for small samples.

On Mixing Rates for Bayesian CART

no code implementations31 May 2023 Jungeum Kim, Veronika Rockova

We show polynomial mixing of Twiggy Bayesian CART without assuming that the signal is connected on a tree.

Bayesian Inference

Variable Selection via Thompson Sampling

no code implementations1 Jul 2020 Yi Liu, Veronika Rockova

Thompson sampling is a heuristic algorithm for the multi-armed bandit problem which has a long tradition in machine learning.

BIG-bench Machine Learning Interpretable Machine Learning +3

Adaptive Bayesian SLOPE -- High-dimensional Model Selection with Missing Values

3 code implementations14 Sep 2019 Wei Jiang, Malgorzata Bogdan, Julie Josse, Blazej Miasojedow, Veronika Rockova, Traumabase group

We consider the problem of variable selection in high-dimensional settings with missing observations among the covariates.

Methodology Applications Computation

On Theory for BART

no code implementations1 Oct 2018 Veronika Rockova, Enakshi Saha

Laying the foundations for the theoretical analysis of Bayesian forests, Rockova and van der Pas (2017) showed optimal posterior concentration under conditionally uniform tree priors.

Ensemble Learning

Posterior Concentration for Sparse Deep Learning

no code implementations NeurIPS 2018 Nicholas Polson, Veronika Rockova

As an aside, we show that SS-DL does not overfit in the sense that the posterior concentrates on smaller networks with fewer (up to the optimal number of) nodes and links.

Variance prior forms for high-dimensional Bayesian variable selection

1 code implementation9 Jan 2018 Gemma E. Moran, Veronika Rockova, Edward I. George

In a similar way, we show that conjugate priors for linear regression, which induce prior dependence, can lead to such underestimation in the Bayesian high-dimensional regression setting.

Methodology

Simultaneous Variable and Covariance Selection with the Multivariate Spike-and-Slab Lasso

1 code implementation29 Aug 2017 Sameer K. Deshpande, Veronika Rockova, Edward I. George

We propose a Bayesian procedure for simultaneous variable and covariance selection using continuous spike-and-slab priors in multivariate linear regression models where q possibly correlated responses are regressed onto p predictors.

Methodology

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